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compound C. H。Br gave a 1H NMR spectrum consisting of a a doublet at 81.7, and ·1H), (3H) What is a reasonable strueture for the at δ·1 a multiplet at81.8, - CH, CH2 CHBrCH b. CH, CH CB, CH, BE CHj CBr e. None of these 19. Estimate the stabilization energy for 1,3-butadiene using the tollowing heats of hydrogenation: Compound K2 | △H (kJ mol-1) Moles 1-Butene 1-Pentene 1,3-Butadiene 1,3-Pentadiene -127 -126 -239 -226 a. 13 kJ mol- b. 15 kJ mol- c. 28 kJ mo1- d. 239 kJ mol- e. 112 kJ mol- 20. Which of these compounds will not be represented by a singlet only in the H NMR spectrum? a. Neopentane b. Hexamethylbenzene c. Isobutane d. (2)-1,2-Dichloroethene e. (E)-1,2-Dichloroethene 21. How many IH NMR signals would cis-1,2-dichlorocyclopropane give? a. 1 b. 2 c. 3 d. 4 e.
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Answer #1

l& 1-0 t) (mi,t) (4 opn-is conrelk Singlat) → Singur CH3 Do Butane CH opfon 3- singlut du thvret Cl option

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